Development of large current negative ion source for LHD neutral injection
説明
The R&D program on a large current negative ion source has been carried out at the National Institute for Fusion Science for the Large Helical Device Project. So far a 1/3-scaled model ion source has been examined. By seeding a small amount of cesium in discharge, we obtained a total current of 8.5 A with an extracting energy of 40 keV. 1.2 A of high density negative ion beam was obtained from the restricted area of the source with the current density of 54 mA/cm/sup 2/. An engineering test of a vacuum-immersed source has also been performed.
収録刊行物
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- 15th IEEE/NPSS Symposium. Fusion Engineering
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15th IEEE/NPSS Symposium. Fusion Engineering 1 462-465, 2002-12-30
IEEE
